1. Introduction to the Characteristics of Domestic Wastewater
Domestic wastewater is generated from daily human activities, including water from bathing, laundry, toilet flushing, and kitchen areas in restaurants and hotels. A notable characteristic of domestic wastewater is its high nitrogen content. To effectively treat domestic wastewater and ensure that the treatment system operates efficiently while meeting discharge standards, it is essential to optimize the design and calculations from the project planning stage.
The main pollutants found in domestic wastewater include: Biochemical Oxygen Demand (BOD₅), Total Suspended Solids (TSS), Total Nitrogen, Total Phosphorus, fats and oils from animals and plants, and Coliform bacteria. Among these parameters, Ammonia Nitrogen (N-NH₃) is considered the most difficult to treat in domestic wastewater.
Simple Technology Process for Domestic Wastewater Treatment
2. Introduction to On-Site Biological Treatment Technology for Domestic Wastewater – No Septic Tank Required
The current domestic wastewater treatment solution being widely applied is on-site wastewater treatment technology — a method originating from Japan. This technology is commonly used by households through a compact wastewater treatment unit made from composite materials with a lifespan of up to 50 years.
Its compact design makes it easy to transport and highly suitable for areas without centralized wastewater treatment systems. Notably, this system treats domestic wastewater without the need for a traditional septic tank, offering an effective and convenient solution for residential and decentralized settings.
Compact On-Site Domestic Wastewater Treatment System Made of Composite – No Septic Tank Required
3. Advantages of On-Site Domestic Wastewater Treatment Technology:
Utilizes modern biological treatment technology without the use of any chemicals;
Compact, high-durability system design that is easy to transport and relocate when business operations move;
Treated wastewater meets Class A standards of QCVN 14:2008/BTNMT – National Technical Regulation on Domestic Wastewater;
Maximizes space savings for businesses (no need for septic tanks, equalization tanks, or sludge tanks);
Low operating and energy costs: the system uses only two air blowers;
The biological treatment process generates no sludge, significantly reducing sludge transportation and disposal costs compared to traditional methods;
Extremely low treatment cost, approximately 2,000 VND per 1 m³ of wastewater;
Odorless operation, environmentally friendly;
Fast installation time: the entire system can be completed in just 10–12 days;
We offer a full 18–24 month technology warranty for investors at no additional cost.
4. Principle of On-Site Domestic Wastewater Treatment Technology with Zero Sludge Generation
Most pollutants serve as food for heterotrophic microorganisms. The remainder is consumed by autotrophic microorganisms, which use energy from synthesizing inorganic compounds to create organics like carbohydrates, amino acids, and proteins. These then become energy sources for heterotrophs in a continuous recycling process. As a result, very little sludge is generated (only the non-biodegradable components remain).
5. Where to Buy the Best On-Site Domestic Wastewater Treatment Systems
Finding a high-quality on-site wastewater treatment system is no longer difficult – because we’re here for you. Founded in 2013, Dai Nam Environmental Solutions Co., Ltd. specializes in designing, manufacturing, and supplying on-site domestic wastewater treatment systems. We guarantee the best products and top-tier after-sales service. We are committed to delivering the most reliable and cost-effective systems with premium quality and aesthetics.
Projects We Have Completed or Are Currently Executing:
1. Wastewater treatment system – 4,200 m³/day, Eocgreen Residential Area – District 7, HCMC
2. Wastewater system – 45 m³/day, Dreamplex195 Office Building – Binh Thanh District, HCMC
3. Wastewater system – 250 m³/day, Bitexco Tower – District 1, HCMC
4. System upgrade – 1,000 m³/day, Residential Area – Tan Phu District, HCMC
5. Upgrade – 120 m³/day, Cuu Long Hotel (Majestic) – District 1, HCMC
6. Composite tank system – 25 m³/day, Cityland Kindergarten – Go Vap District, HCMC
7. Wastewater treatment system – 250 m³/day, Kim Kim Tran Company – Tan Uyen, Binh Duong
8. Supermarket wastewater system – 20 m³/day, Tan Phu District, HCMC
9. Operation of healthcare and domestic wastewater systems – various wards, District 1, HCMC
10. Wastewater treatment – 300 m³/day, Saigon Prince Hotel – District 1, HCMC
11. Supermarket wastewater system – 30 m³/day, Tan Binh District, HCMC
12. Wastewater treatment system – 15 m³/day, District 7, HCMC
13. Wastewater system for Richstar Apartment Complex – 1,130 m³/day, Tan Phu District, HCMC
14. System for Properwell Factory (3,000 employees) – VSIP Industrial Park, Quang Ngai
15. Happy Furniture Factory systems – VSIP Quang Ngai: 180 m³/day (West lot), 120 m³/day (East lot)
16. Hotel wastewater treatment – 50 m³/day, Hoi An, Quang Nam Province
17. System for Hudbuilding Residential Complex – 400 m³/day, Nha Trang, Khanh Hoa Province
…and many more projects across the country.
